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Shear response of Lime/GGBS-Stabilised High-Sulphate-Bearing Clay under consolidated-undrained conditions (2022)
Journal Article
Eyo, E., & Abbey, S. (2022). Shear response of Lime/GGBS-Stabilised High-Sulphate-Bearing Clay under consolidated-undrained conditions. Applied Sciences, 12(20), https://doi.org/10.3390/app122010639

This study investigated the consolidated undrained shear behaviour of a stabilised high-sulphate soil system. Lime was used to stabilise the soil with the inclusion of ground granulated blast furnace slag (GGBS) as an ettringite suppressor. Both volu... Read More about Shear response of Lime/GGBS-Stabilised High-Sulphate-Bearing Clay under consolidated-undrained conditions.

Explainable machine learning for autonomous vehicle positioning using SHAP (2022)
Book Chapter
Onyekpe, U., Lu, Y., Apostolopoulou, E., Palade, V., Eyo, E. U., & Kanarachos, S. (2023). Explainable machine learning for autonomous vehicle positioning using SHAP. In M. Mehta, V. Palade, & I. Chatterjee (Eds.), Explainable AI: Foundations, Methodologies and Applications (157-183). Springer. https://doi.org/10.1007/978-3-031-12807-3_8

Despite the recent advancements in Autonomous Vehicle (AV) technology, safety still remains a key challenge for their commercialisation and development. One of the major systems influencing the safety of AVs is its navigation system. Road localisatio... Read More about Explainable machine learning for autonomous vehicle positioning using SHAP.

Using Artificial Intelligence techniques to predict intrinsic compressibility characteristic of Clay (2022)
Journal Article
Eyo, E. E., Abbey, S. J., & Booth, C. A. (2022). Using Artificial Intelligence techniques to predict intrinsic compressibility characteristic of Clay. Applied Sciences, 12(19), https://doi.org/10.3390/app12199940

Reconstituted clays have often provided the basis for the interpretation and modelling of the properties of natural clays. The term “intrinsic” was introduced to describe a clay remoulded or reconstituted at moisture content up to 1.5 times its liqui... Read More about Using Artificial Intelligence techniques to predict intrinsic compressibility characteristic of Clay.

Strength predictive modelling of soils treated with calcium-based additives blended with eco-friendly pozzolans—A machine learning approach (2022)
Journal Article
Eyo, E. U., Abbey, S. J., & Booth, C. A. (2022). Strength predictive modelling of soils treated with calcium-based additives blended with eco-friendly pozzolans—A machine learning approach. Materials, 15(13), Article 4575. https://doi.org/10.3390/ma15134575

The unconfined compressive strength (UCS) of a stabilised soil is a major mechanical parameter in understanding and developing geomechanical models, and it can be estimated directly by either lab testing of retrieved core samples or remoulded samples... Read More about Strength predictive modelling of soils treated with calcium-based additives blended with eco-friendly pozzolans—A machine learning approach.

Data on one-dimensional vertical free swelling potential of soils and related soil properties (2021)
Journal Article
U, E. E., & Onyekpe, U. (2021). Data on one-dimensional vertical free swelling potential of soils and related soil properties. Data in Brief, 39, Article 107608. https://doi.org/10.1016/j.dib.2021.107608

Most of the damaging geo-hazards recorded in modern history are caused by soil swelling or expansion. Therefore, proper evaluation of a soil's capacity to swell is very crucial for the achievement of a secure and safe ground for civil infrastructures... Read More about Data on one-dimensional vertical free swelling potential of soils and related soil properties.

Multiclass stand-alone and ensemble machine learning algorithms utilised to classify soils based on their physico-chemical characteristics (2021)
Journal Article
Abbey, S., & Eyo, E. (2022). Multiclass stand-alone and ensemble machine learning algorithms utilised to classify soils based on their physico-chemical characteristics. Journal of Rock Mechanics and Geotechnical Engineering, 14(2), 603-615. https://doi.org/10.1016/j.jrmge.2021.08.011

This study has provided an approach to classify soil using machine learning. Multiclass elements of stand-alone machine learning algorithms (i.e. logistic regression (LR) and artificial neural network (ANN)), decision tree ensembles (i.e. decision fo... Read More about Multiclass stand-alone and ensemble machine learning algorithms utilised to classify soils based on their physico-chemical characteristics.

Experimental study on early age characteristics of lime-GGBS-treated gypseous clays under wet-dry cycles (2021)
Journal Article
Abbey, S. J., Eyo, E. U., & Jeremiah, J. J. (2021). Experimental study on early age characteristics of lime-GGBS-treated gypseous clays under wet-dry cycles. Geotechnics, 1(2), 402-415. https://doi.org/10.3390/geotechnics1020019

Gypseous soils are capable of presenting ground construction challenges to civil and geotechnical engineers due to their unpredictable deformation characteristics. These undesirable responses are sometimes caused by environmental changes in moisture... Read More about Experimental study on early age characteristics of lime-GGBS-treated gypseous clays under wet-dry cycles.

Improved prediction of clay soil expansion using machine learning algorithms and meta-heuristic dichotomous ensemble classifiers (2021)
Journal Article
Eyo, E. U., Abbey, S. J., Lawrence, T. T., & Tetteh, F. K. (2022). Improved prediction of clay soil expansion using machine learning algorithms and meta-heuristic dichotomous ensemble classifiers. Geoscience Frontiers, 13(1), Article 101296. https://doi.org/10.1016/j.gsf.2021.101296

Soil swelling-related disaster is considered as one of the most devastating geo-hazards in modern history. Hence, proper determination of a soil's ability to expand is very vital for achieving a secure and safe ground for infrastructures. Accordingly... Read More about Improved prediction of clay soil expansion using machine learning algorithms and meta-heuristic dichotomous ensemble classifiers.

Inclusion of RoadCem additive in cementitious materials for soil stabilization (2021)
Journal Article
Eyo, E. U., Ng’ambi, S., & Abbey, S. J. (2021). Inclusion of RoadCem additive in cementitious materials for soil stabilization. Geotechnical Special Publications, 2021-May(GSP 324), 166-176. https://doi.org/10.1061/9780784483411.016

The use of sustainable binders in soil stabilization has dominated most discussions in geotechnical engineering in recent years. In keeping with the objective of reducing carbon foot-printing, a zeolite/alkali earth metal-based additive called “RoadC... Read More about Inclusion of RoadCem additive in cementitious materials for soil stabilization.

Machine learning regression and classification algorithms utilised for strength prediction of OPC/by-product materials improved soils (2021)
Journal Article
Eyo, E. U., & Abbey, S. J. (2021). Machine learning regression and classification algorithms utilised for strength prediction of OPC/by-product materials improved soils. Construction and Building Materials, 284, Article 122817. https://doi.org/10.1016/j.conbuildmat.2021.122817

In this study, stand-alone machine (ML) models (Bayesian regressor (BLR), least square linear regressor (REG), artificial neural networks (ANN), and logistic regression (LR)), tree-ensemble ML models (boosted decision tree (BDT), random decision fore... Read More about Machine learning regression and classification algorithms utilised for strength prediction of OPC/by-product materials improved soils.

Experimental study on the use of RoadCem blended with by-product cementitious materials for stabilisation of clay soils (2021)
Journal Article
Ngambi, S., Okeke, C. A., Eyo, E. U., & Abbey, S. (2021). Experimental study on the use of RoadCem blended with by-product cementitious materials for stabilisation of clay soils. Construction and Building Materials, 280, Article 122476. https://doi.org/10.1016/j.conbuildmat.2021.122476

This work presents an experimental study on the physical, mechanical and microstructural characteristics of two clay soils treated with by-product materials (GGBS and PFA) blended with a nano technology-based additive called RC (RC). The soils were i... Read More about Experimental study on the use of RoadCem blended with by-product cementitious materials for stabilisation of clay soils.

Microstructure and physical-mechanical characteristics of treated kaolin-bentonite mixture for application in compacted liner systems (2021)
Journal Article
Eyo, E., Abbey, S., Oti, J., Ng’ambi, S., Ganjian, E., & Coakley, E. (2021). Microstructure and physical-mechanical characteristics of treated kaolin-bentonite mixture for application in compacted liner systems. Sustainability, 13(4), Article 1617. https://doi.org/10.3390/su13041617

Treated bentonite-rich soils used as liner materials in landfills may provide an effective solution to the problems of increased void ratios upon swelling at reduced suction as well as desiccation cracking when suction is increased during desaturatio... Read More about Microstructure and physical-mechanical characteristics of treated kaolin-bentonite mixture for application in compacted liner systems.

Appropriate use of lime in the study of the physicochemical behaviour of stabilised lateritic soil under continuous water ingress (2020)
Journal Article
Okeke, C., Abbey, S., Oti, J., Eyo, E., Johnson, A., Ngambi, S., …Ujile, M. (2021). Appropriate use of lime in the study of the physicochemical behaviour of stabilised lateritic soil under continuous water ingress. Sustainability, 13(1), 1-26. https://doi.org/10.3390/su13010257

Licensee MDPI, Basel, Switzerland. Lime stabilisation is one of the traditional methods of improving the engineering properties of lateritic soils for use as subgrade and foundation materials for the construction of road pavements and highway embankm... Read More about Appropriate use of lime in the study of the physicochemical behaviour of stabilised lateritic soil under continuous water ingress.

Incorporation of a nanotechnology-based product in cementitious binders for sustainable mitigation of sulphate-induced heaving of stabilised soils (2020)
Journal Article
Eyo, E. U., Abbey, S. J., Ngambi, S., Ganjian, E., & Coakley, E. (2021). Incorporation of a nanotechnology-based product in cementitious binders for sustainable mitigation of sulphate-induced heaving of stabilised soils. International Journal of Engineering Science and Technology, 24(2), 436-448. https://doi.org/10.1016/j.jestch.2020.09.002

Sulphate-induced heaving in soils is a common problem caused mostly by the use of calcium-based binders in the stabilisation of sulphate-bearing soils. Sulphate-induced heaving is attributed to precipitation and growth of ettringite minerals in a hig... Read More about Incorporation of a nanotechnology-based product in cementitious binders for sustainable mitigation of sulphate-induced heaving of stabilised soils.

An overview of soil–water characteristic curves of stabilised soils and their influential factors (2020)
Journal Article
Eyo, E. U., Ng'ambi, S., & Abbey, S. (2022). An overview of soil–water characteristic curves of stabilised soils and their influential factors. Journal of King Saud University (Engineering Science), 34(1), 31-45. https://doi.org/10.1016/j.jksues.2020.07.013

Since unsaturated soil conditions are normally experienced above the groundwater table, most treated or stabilised soils for roadworks, earth dams’ embankments, landfill sites, hydraulic barriers etc. could be regarded as existing in this region. The... Read More about An overview of soil–water characteristic curves of stabilised soils and their influential factors.

Incorporation of a nanotechnology-based additive in cementitious products for clay stabilisation (2020)
Journal Article
Eyo, E. U., Ng'ambi, S., & Abbey, S. J. (2020). Incorporation of a nanotechnology-based additive in cementitious products for clay stabilisation. Journal of Rock Mechanics and Geotechnical Engineering, 12(5), 1056-1069. https://doi.org/10.1016/j.jrmge.2019.12.018

The mechanical performances and water retention characteristics of clays, stabilised by partial substitution of cement with by-products and inclusion of a nanotechnology-based additive called RoadCem (RC), are studied in this research. The unconfined... Read More about Incorporation of a nanotechnology-based additive in cementitious products for clay stabilisation.

Mechanical properties and microstructure of fibre-reinforced clay blended with by-product cementitious materials (2020)
Journal Article
Abbey, S. J., Eyo, E. U., Oti, J., Amakye, S. Y., & Ngambi, S. (2020). Mechanical properties and microstructure of fibre-reinforced clay blended with by-product cementitious materials. Geosciences, 10(6), 241. https://doi.org/10.3390/geosciences10060241

Clayey soils endure adverse changes in strength and volume due to seasonal changes in moisture content and temperature. It has been well recognised that high cement content has been successfully employed in improving the mechanical properties of clay... Read More about Mechanical properties and microstructure of fibre-reinforced clay blended with by-product cementitious materials.

Performance of clay stabilized by cementitious materials and inclusion of zeolite/alkaline metals-based additive (2020)
Journal Article
Eyo, E. U., Ng'ambi, S., & Abbey, S. J. (2020). Performance of clay stabilized by cementitious materials and inclusion of zeolite/alkaline metals-based additive. Transportation Geotechnics, 23, Article 100330. https://doi.org/10.1016/j.trgeo.2020.100330

RoadCem (RC) is a by-product additive produced based on nanotechnology and comprises of synthetic zeolites and alkali earth metals as some of its components. The geotechnical properties of a soil stabilized by adding RC to partly replaced cementitiou... Read More about Performance of clay stabilized by cementitious materials and inclusion of zeolite/alkaline metals-based additive.

Swell and microstructural characteristics of high-plasticity clay blended with cement (2019)
Journal Article
Abbey, S. J., Eyo, E. U., & Ngambi, S. (2020). Swell and microstructural characteristics of high-plasticity clay blended with cement. Bulletin of Engineering Geology and the Environment, 79, 2119-2130. https://doi.org/10.1007/s10064-019-01621-z

This study presents the effect of high plasticity on swell potential, swelling pressure and micro structural characteristics of kaolinite-bentonite mixed clays. Five different combining ratios of kaolinite bentonite mixture of 100:0, 90:10, 75:25, 50... Read More about Swell and microstructural characteristics of high-plasticity clay blended with cement.

Effect of organic matter on swell and undrained shear strength of treated soils (2019)
Journal Article
Abbey, S. J., Omotayo Olubanwo, A., Ngambi, S., Umo Eyo, E., & Adeleke, B. O. (2019). Effect of organic matter on swell and undrained shear strength of treated soils. Journal of Civil, Construction and Environmental Engineering, 4(2), 48-58. https://doi.org/10.11648/j.jccee.20190402.12

This paper presents a laboratory and statistical study on swell and undrained shear strength of cemented organic clays blended with eco-friendly (by-product) cementitious materials such as ground granulated blast slag (GGBS) and cement kiln dust (CKD... Read More about Effect of organic matter on swell and undrained shear strength of treated soils.